| Summary: | The usability of two environmentally important waste materials in cementitous fine grout production was investigated as partial replacement materials for cement and aggregate. The influence of replacement materials on flowability and strength of was investigated by rheological and compressive strength tests. The strength of 28 and 90 days grouts was determined. It was found that the flowability and strength of the mixes were heavily dependent on W/C ratio and affected by type and amount of replacement materials. Increasing W/C ratio and fly ash amount increased flowability, but inversely affected the strength of grouts. On the other hand, marble powder was found to increase the strength of grout to a large extent, but decreased the flowability. It was interestingly found that the strength of all grout mixes increased at different levels with aging and the lowest and the highest increase were observed with marble powder and fly ash replaced mixes, respectively.
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